powersoft DIGAM series, DIGAM 7000, DIGAM 5000 User Manual

Digital Audio Amplifier

for Professional Applications

User Manual

POWERSOFT

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Table of ContentsTable of Contents

IMPORTANT..............................................................................................................................................................3

WARNING NOTICES ................................................................................................................................................3

INTRODUCTION .......................................................................................................................................................5

INSTALLATION AND OPERATION.........................................................................................................................6

UNPACKING ..............................................................................................................................................................6

MOUNTING ...............................................................................................................................................................6

OPERATING PRECAUTIONS ........................................................................................................................................6

CONNECTING INPUTS ................................................................................................................................................6

CONNECTING OUTPUTS.............................................................................................................................................6

CONTROLS...............................................................................................................................................................7

INPUT ATTENUATORS .................................................................................................................................................7

LED INDICATORS AND CONTROLS......................................................................................................................7

LED INDICATORS .......................................................................................................................................................7

FRONT PANEL CONTROLS ..........................................................................................................................................7

PROTECTION ...........................................................................................................................................................8

TURN-ON/TURN-OFF MUTING...................................................................................................................................8

SHORT CIRCUIT PROTECTION .....................................................................................................................................8

THERMAL PROTECTION ..............................................................................................................................................8

DC FAULT PROTECTION .............................................................................................................................................8

INPUT/OUTPUT PROTECTION ......................................................................................................................................9

USER MAINTENANCE..............................................................................................................................................9

WARRANTY AND DISCLAIMERS ...........................................................................................................................9

DISCLAIMER ..............................................................................................................................................................9

PRODUCT WARRANTY ................................................................................................................................................9

TECHNICAL ASSISTANCE AND SERVICE............................................................................................................9

TECHNICAL ASSISTANCE ..........................................................................................................................................10

FACTORY SERVICE ..................................................................................................................................................10

INTERNATIONAL SERVICING ......................................................................................................................................10

TECHNICAL NOTES...............................................................................................................................................11

DIGAM 3000.............................................................................................................................................................12

GENERAL................................................................................................................................................................12

AUDIO SECTION .......................................................................................................................................................12

FUNCTIONS.............................................................................................................................................................12

DIGAM 5000.............................................................................................................................................................13

GENERAL................................................................................................................................................................13

AUDIO SECTION .......................................................................................................................................................13

FUNCTIONS.............................................................................................................................................................13

DIGAM 7000.............................................................................................................................................................14

GENERAL................................................................................................................................................................14

AUDIO SECTION .......................................................................................................................................................14

FUNCTIONS.............................................................................................................................................................14

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Important

CAUTION

DO NOT OPEN

!

CAUTION: To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing
to qualified service personnel.

WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture.

SAFEGUARDS: Electrical energy can perform many useful functions. This unit has been engineered and manufactured to
assure your personal safety. Improper use can result in potential electrical shock or fire hazards. In order not to defeat the
safeguards, observe the following instructions for its installation, use and servicing.

NOTES:

This equipment has been tested and found to comply by Competent Body (Directive 89/336/EEC-EMC) pursuant to the
product family standard for audio professional use:

EN 55103-1 and EN 55103-2 standard (with the limits for E1 and E2 electromagnetic environment); EN61000– 3 – 2, EN

This equipment has been tested and found to comply by Notyfed Body (Directive 73/23/EEC L.V) pursuant to the audio
apparatus safety requirements:

Standard EN 60065.

Warning Notices

LOCATION

Install the amplifier in a well-ventilated location where it will not be exposed to high temperature or
humidity.

Do not install the amplifier in a location that is exposed to direct rays of the sun, or near to hot
appliances or radiators. Excessive heat can adversely affect the cabinet and internal components.
Installation of the amplifier in a damp or dusty environment may result in malfunction or accident.

PRECAUTIONS REGARDING INSTALLATION

Placing and using the amplifier for long periods on heat-generation sources will affect performances.
Avoid placing the amplifier on heat-generating sources.

Install this amplifier as far as possible from tuners and TV sets. An amplifier installed in close
proximity to such equipment may cause noise or degradation of the picture.

SAFETY RULES

This device must be powered exclusively by earth connected mains sockets in electrical networks
compliant to the IEC 364 or similar rules. Is absolutely necessary to verify this fundamental
requirement of safety and, in case of doubt, require an accurate check by a qualified personal.The
constructor cannot be considered responsible for eventual damages caused to persons, things or
data for the missing of accurate earth link.Before powering this device verify that the amplifier is
supplied with the correct voltage rating.

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Verify that your main connection is capable to satisfy the power ratings of the device.
Do not spill water or other liquids into or on the unit.
Do not use this unit if the electrical power cord is frayed or broken.
Do not remove the cover. Removing the cover will expose you to potentially dangerous voltage.
Contact the authorized center for ordinary and extraordinary maintenance.

SPEAKER DAMAGE

The DIGAM series amplifiers are among the most powerful professional amplifiers available and are
capable of producing much more power than many loudspeakers can handle. It is the user’s
responsibility to use

suitable speakers with the amplifier and to use them in a sensible way that will not cause damage.
Powersoft will not be responsible for damaged speakers. Consult the speaker manufacturer for

power-handling recommendations.
Even if you reduce the gain using the amplifier’s front panel attenuation controls, it is still possible to

reach full output power if the input signal level is high enough.
A single high-power crescendo can damage high-frequency drivers almost instantaneously, while

low-frequency drivers can usually withstand very high, continuous power levels for a few seconds
before they fail. Reduce power immediately if you hear any speaker “bottoming out” - harsh pops or
cracking distortion that indicate that the speaker voice coil or diaphragm is striking the magnet
assembly.

Powersoft recommends that you use amplifiers of this power range for more headroom (cleaner
sound) rather than for increased volume.

SPEAKER OUTPUT SHOCK HAZARD

A DIGAM amplifier is capable of producing hazardous output voltages. To avoid electrical shock, do
not touch any exposed speaker wiring while the amplifier is operating. This manual contains
important information on operating your DIGAM amplifier correctly and safety. Please read it
carefully before operating your amplifier. If you have any questions, contact your Powersoft dealer.

This manual contains important information on operating your DIGAM amplifier correctly and
safety. Please read it carefully before operating your amplifier. If you have any questions,
contact your Powersoft dealer.

POWERSOFT

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Introduction

Powersoft is a leading company in the field of high efficiency audio power management. The totally
new Powersoft’s DIGAM (DIGital AMplifier) technology has changed the way the world looks at
professional audio amplification. No other amplifiers come close for applications demanding high
power and long term reliability.
Thanks to amazing reductions in heat output along with reductions in weight and the characteristic
high output power, DIGAM amplifiers can be used in an unlimited range of applications such as
concert touring, opera houses, theaters, churches, cinema, theme parks, television sound stages and
industrial applications.

More sound and less weight

Compared to a conventional amplifier, Powersoft DIGAM technology offers very high efficiency and
delivers more power to the loudspeakers with much reduced heat dissipation. This greater efficiency
enables dimensions, weight and power consumption to be reduced. The output stages of the
amplifiers typically run at 95% efficiency, dissipating only 5% of the input energy as heat.

One of the most interesting characteristics is that DIGAM’s efficiency is almost independent of output
level. Conventional amplifiers achieve their best efficiency only at full rated power output. Since
standard music has an average power density of 40% of the maximum level, conventional amplifiers
can easily generate 10 times more heat than DIGAM for the same volume of sound.

Superior Sound-Sonic Accuracy

Crystal-clear highs, and a tight, well defined low end: the most accurate reproduction of an audio
signal. Patented design features ensure very high performance in parameters such as distortion,
frequency response, slew rate, power bandwidth and dumping factor.

Totally Digital with High Reliability

The DIGAM series is based on PWM technology that has been used for 30 years or more in power
supplies and inverters. PWM provides high reliability, small size, low weight and high efficiency. A
PWM converter works as a high frequency sampler, converting the variable amplitude (audio) signal
into an impulse sequence with average value equal to the audio input.
DIGAM amplifiers use very high sampling frequencies to obtain high performances across the audio
band. Powersoft holds several patents on the DIGAM technology.

The Best Amplifier for Your Mains

Powersoft is the first amplifier constructor to use power factor correction. This unique feature ensures
that a predominantly resistive load is presented to the mains power supply, minimizing current
distortion and voltage/current displacement. This leads too much improved performance of the
amplifier at high levels of output and avoids mains voltage collapses, typical of standard and
switching power supplies. Another great advantage of this technology is that its performance is, to a
large extent, independent of the main voltage. The rated output power does not vary with load/line
conditions.

The Show Always Goes On

DIGAM Series is completely protected against every possible error in operation and is designed to
work under every condition. It gives you maximum power with maximum safety and increases long­term reliability. Anticipating potential problems at the design stage means your show always goes on!